Mice and Rats
House Mouse
Color dusty gray weigh around a ounce. Length 2 to 4 inches, Life span 1-2 years. These guys only need 1/4 opening to get into your home. That is less than half the size of your pinkie finger. Litter size 5 to 7 pups. Will have up to 10 litters a year. Nocturnal; most feeding occurs 30 minutes after sunset. Scientific name Mus Musculus meaning "little thief"
Deer Mice
Reddish-brown to golden brown, white feet & chest. Large black eyes, large furred ears. Not normally found in city unless you live next to fields. Larger than a house mouse. Will stay 25 to 30 feet from food source. Found around trees, barns, garages. Most infestation in homes I have come across has been after a field has been cut.
Norway/ Brown rat
These rats can get huge almost 16" in length. If your feeding chickens these guys always seem to show up. Mild winters and new construction also has played a role in their increased population.